A galvanometer has resistance of 100 Ω and a current of 10 m A produces full scale deﬂection in it. The resistance to be connected to it in series, to get a voltmeter of range 50 v o l t , is

Question

A galvanometer has resistance of 100 Ω and a current of 10 m A produces full scale deﬂection in it. The resistance to be connected to it in series, to get a voltmeter of range 50 v o l t , is, 3900 Ω, 4000 Ω, 4600 Ω, 4900 Ω

MARKS App · Accepted Answer

G = 100 Ω , i g = 10 m A Range of voltmeter = i g G + R 50 = 10 × 10 - 3 100 + R R = 4900 Ω

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